Alejandro Jodorowsky's commentaries for El Topo and The Holy Mountain are fantastic. He speaks in his native tongue (Spanish), but Anchor Bay/ABKCO provided optional English subtitles. On THM, he goes into the actual meanings of everything in the film like the symbols and philosophy. Lots of...
My favorite commentary is the Scott MacQueen track on the Milestone Video version of "Phantom of the Opera." Lots of information and great delivery. Ernest Lehman's commentary for North By Northwest is probably my least favorite... I really wish they also had Rudy Behlmer on the track.